CH153676A - Process for the preparation of a condensation product which can be used as a reservation agent. - Google Patents

Process for the preparation of a condensation product which can be used as a reservation agent.

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Publication number
CH153676A
CH153676A CH153676DA CH153676A CH 153676 A CH153676 A CH 153676A CH 153676D A CH153676D A CH 153676DA CH 153676 A CH153676 A CH 153676A
Authority
CH
Switzerland
Prior art keywords
condensation product
hol
preparation
reservation agent
product
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH153676A publication Critical patent/CH153676A/en

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Description

  

      Verfahren    zur     Darstellung        eines    als     Reservierungsmittel        verwendbaren     Kondensationsproduktes.    Es wurde gefunden, dass man zu einer  wertvollen Verbindung gelangt, die beispiels  weise als     Reservierungsmittel    für Wolle oder  Seide gegen     Anfärbung    mit     substantiven     Farbstoffen benutzt werden kann, wenn man  1.

       Mol.        Benzi.din-m,m'-@disulfosäure    mit 2     Mol.          in-Nitrobenzolsulfochlorid    kondensiert, das  erhältliche Kondensationsprodukt zur     Di-          aminoverbindung    reduziert, diese wiederum  mit 2     Mol.        m-Nitrobenzolsulfochlorid    kon  densiert, das resultierende Produkt zur     Di-          aminoverbindung    reduziert und letztere       eichliesslich    mit 2     Mol.        1,2,4-Trichlorbenzol-5-          sulfochlorid    vereinigt.  



       Beispiel:     Bis-     (3-aminobenzol-l-sulfonyl    - 3'     -amino-          benzol-1'-sul.fonyl)    -     benzidin    -     m,m'-        disulfo-          säure    wird, wie im Beispiel des     Hauptpaten-          i    es angegeben,

   hergestellt und die einem       Grammol.    entsprechende Menge mit etwa der    15fachen Menge Wasser unter Zugabe von  etwa 110     gr    Kreide heiss in Lösung gebracht  und nach Zusatz von weiteren 160     -r    Kreide  werden in die Lösung bei 85 bis 95   700  Gewichtsteile     1,2,4-Trichlorbenzol    - 5 -     sulfo-          chlorid        unter    gutem Rühren eingetragen. Die  Reaktion .setzt nach kurzer Zeit unter Schäu  men der Mischung ein und das Reaktions  produkt beginnt sich in öliger Form an der  Oberfläche der Reaktionsmischung auszu  scheiden.

   Man erhält die Temperatur unter  gutem Rühren noch etwa eine Stunde bei 90  bis 95  , setzt Salzsäure bis zur schwach  kongosauren Reaktion der Flüssigkeit zu,  lässt erkalten und zieht die klare Brühe von  dem in festen Krusten zurückbleibenden Re  aktionsprodukt ab.  



  Das gewonnene Kalksalz des Kondensa  tionsproduktes wird mit etwa der fünffachen  Gewichtsmenge Wasser heiss sofiaalkalisch in  Lösung gebracht und die vom ausgefällten           Calciumkarbonat    durch Absaugen befreite  Brühe nach Zusatz von .etwas Kochsalz  lösung mit Essigsäure angesäuert, wobei  das     Natriumsalz    der Bis-(1,2,4-trielilorbeii-         zol-5-sulf        onyl-3'-        aminobenzol-1'    -     sulf        onyl-3"-          aminobenzol-1"-sixlfonyl)-benzidin    -     m,

  m'    -     di-          sulfosäure    von der Formel  
EMI0002.0012     
    in zuerst dickflüssiger, dann in der Kälte  bröcklig erstarrenden Form ausfällt. Es kann  durch Absaugen isoliert werden und stellt  auch in Form des     Ammoniumsa.lzes    nach  dem Trocknen ein fast weisses Produkt dar,  das sich leicht in warmem Wasser löst und  in hohem Grade die Eigenschaft besitzt,  Wolle oder Seide in Mischgeweben vor An  fä.rbung mit     substantiven    Farbstoffen zu  schützen.



      Process for the preparation of a condensation product which can be used as a reservation agent. It has been found that one arrives at a valuable compound, which can be used, for example, as a reserve agent for wool or silk against staining with substantive dyes, if one 1.

       Mol. Benzi.din-m, m '- @ disulfonic acid condensed with 2 mol. In-nitrobenzenesulfochloride, the available condensation product is reduced to the diamino compound, this in turn condenses with 2 mol. M-nitrobenzenesulfochloride, the resulting product to the di-amino compound reduced and the latter combined with 2 mol. 1,2,4-trichlorobenzene-5-sulfochloride.



       Example: Bis- (3-aminobenzene-l-sulfonyl - 3 '-amino-benzene-1'-sul.fonyl) - benzidine - m, m'-disulfonic acid is, as stated in the example of the main sponsor,

   made and the one gramol. Bring the corresponding amount into the solution with about 15 times the amount of water with the addition of about 110 grams of hot chalk and after adding another 160 grams of chalk, 700 parts by weight of 1,2,4-trichlorobenzene - 5 - sulfo- chloride entered with thorough stirring. The reaction begins after a short time with foaming of the mixture and the reaction product begins to separate out in oily form on the surface of the reaction mixture.

   The temperature is maintained at 90 to 95 for about an hour with thorough stirring, hydrochloric acid is added until the liquid has a weak Congo-acidic reaction, the mixture is allowed to cool and the clear broth is drawn off from the reaction product remaining in solid crusts.



  The calcium salt obtained from the condensation product is dissolved in a hot, soft alkaline solution with about five times the amount by weight of water and the broth freed from the precipitated calcium carbonate by suction is acidified with acetic acid after adding a little sodium chloride solution, whereby the sodium salt of the bis- (1,2,4 -trielilorbei- zol-5-sulf onyl-3'- aminobenzene-1 '- sulf onyl-3 "- aminobenzol-1" -sixlfonyl) -benzidine - m,

  m '- disulfonic acid of the formula
EMI0002.0012
    precipitates in a form that is initially thick and then crumbly solidified in the cold. It can be isolated by suction and, in the form of the ammonium salt, is an almost white product after drying, which dissolves easily in warm water and has the property to a large extent of wool or silk in mixed fabrics before staining to protect substantive dyes.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Konden sationsproduktes, dadurch gekennzeichnet, da.ss man 1 Hol. Ben:zidin-m,m'-disulfosä.ure mit 2 Hol. m-Nitrobenzolsulfochlorid kon densiert. das erhaltene Kondensationsprodukt zur Diaminoverbindung reduziert, diese wie derum mit -2 Hol. m-Nitrobenzolsulfochlorid kondensiert, das resultierende Produkt zier Diaminoverliindung reduziert und letztere schliesslich mit ? Hol. PATENT CLAIM: Process for the preparation of a condensation product, characterized in that one 1 Hol. Ben: zidin-m, m'-disulfosä.ure with 2 hol. m-Nitrobenzenesulfochlorid condenses. the condensation product obtained is reduced to the diamino compound, this in turn with -2 Hol. m-Nitrobenzenesulfochlorid condenses, the resulting product is reduced ornamental diamino compound and the latter finally with? Hol. 1,2,4-Triehlorbenzol-5- sulfochlorid vereinigt. Der so erhältliche ungefärbte Endstoff, der sich beispielsweise als Natrium- oder Ammoniumsalz leicht in Wasser löst, kann als Reservierungsmittel benutzt werden, da er in hohem Grade die Eigenschaft besitzt, Wolle oder Seide in Mischgeweben vor An färbung mit Substantiven Farbstoffen zu schützen. 1,2,4-Triehlorbenzol-5-sulfochlorid combined. The uncoloured end product which can be obtained in this way, for example as a sodium or ammonium salt, easily dissolves in water, can be used as a reservation agent, as it has the property to a high degree of protecting wool or silk in mixed fabrics from dyeing with nouns dyes.
CH153676D 1929-03-30 1930-03-29 Process for the preparation of a condensation product which can be used as a reservation agent. CH153676A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE153676X 1929-03-30
CH150292T 1930-03-29

Publications (1)

Publication Number Publication Date
CH153676A true CH153676A (en) 1932-03-31

Family

ID=25715604

Family Applications (1)

Application Number Title Priority Date Filing Date
CH153676D CH153676A (en) 1929-03-30 1930-03-29 Process for the preparation of a condensation product which can be used as a reservation agent.

Country Status (1)

Country Link
CH (1) CH153676A (en)

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